After a few too many drinks at the pub, some of us can start to turn a lovely shade of scarlet. Have you noticed it?

This redness is called alcohol flush reaction and is a not-so-subtle way of your body warning you about the dangers of heavy drinking.

There are some studies that claim red wine offers some health boosts to the heart but overall alcohol does not benefit the body.

The NHS said regularly drinking more than 14 units a week can damage your health over time. Some research suggests there may even be a link between drinking and cancer.

Alcohol flush reaction is caused by the build up of a toxic carcinogen called acetaldehyde, The Mirror reported.

The liver converts the compound into acetate, which is much safer. Those who suffer alcohol flush have bodies that are much slower at the preferable conversion and have acetaldehyde lurking about for much longer.